G - Physics – 03 – B
Patent
G - Physics
03
B
154/108, 150/14,
G03B 21/64 (2006.01) B29C 65/08 (2006.01)
Patent
CA 1117407
ABSTRACT OF THE DISCLOSURE An article and its method of manufacture is disclosed wherein the sheets of thermoplastic web material are bonded to form a laminated unit with an object captured therein. Energy director element sets are disposed between adjacent sheets in an orientation such that when the layers are brought together with the object therebetween and a compressive force and high frequency vibratory energy are applied to the unit, the pressure and vibratory energy are concentrated at a first portion of the energy director elements so that the thermoplastic material in the region of the concentrated pressure softens. A second portion of the energy director elements so aligned with, but spaced from the object to be captured between the sheets. The spacing corresponds generally with the thickness of the energy director elements so that, as the first portion of the energy director elements melts during sonic bonding, the second portion of the elements approaches the abject. As bonding is completed, the second portion of the energy director elements contacts the object to securely hold it between the bonded sheets.
314280
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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